Drying apparatus for paper-machines.



H. E. SMITH, E. S. DANIELS & L. F. LEHR.

latanted Mar. 21, 1916.

mmwz rar HENRY E. SMITH, ELWIN S. DANIELS, AND LEWIS F. LEI-IR, OF MALONE, NEW YORK.

DRYING APPARATUS FOR PAPER-MACHINES.

Specification of Letters Patent.

Patented Mar. 21, 1916.

To aZ Z It'll out it may concern:

Be it known that we, HENRY E. SMITH, ELWIX S. DANIELS, and LEwIs F. LEHR, citizens of the United States, residing at Malone. in the county of Franklin and State of New York, have invented new and useful Improvements in Drying Apparatus for Pape1*-h Iacl1i11es, of which the following is a specification.

Our present invention pertains to means for drying the felts and removing steam from the drying rolls of paper machines; and it consists in the simple. economical and efficient apparatus, for the purpose stated, hereinafter described and definitely claimed.

1n the accompanying drawing which is hereby made a part hereof, the figure is a perspective showing our novel apparatus as properly positioned relatively to the drying rolls and the felts of a paper machine.

Referring by numerals to the said drawing: 1 and are the upper and lower drying rolls of a paper machine, 3 and i are direction rolls complementary to the rollsl and 2 respectively, and 5 and 6 are the felts of the upper rolls and the lower rolls, respectively. These elements are preferably of the well known construction. but obviously may be of any other construction compatible with the purpose of our invention.

7 and 8 are pipes leading to and from coils'll, and 9 and 10 are pipes leading toward and from coils 12.. The coils 11 are arrarged in the depending loops of the felt 5, and the coils 12 are arranged in the upwardly-extending loops of the felt 6. Consequentlv. it will be manifest that when steam is circulated through the said coils 11 and 12, the coils will tend to dry the felts and remove the steam therefrom. It will also e manifestthat the head of steam supplied to the coils will maintain the circulation of steam therethrough, and consequently our apparatus may be operated much more economically than the hot-air driers in which it is necessary to employ a blower and a motor for operating the same in order to maintain the circulation of hotair through the driers: Our novel steamdrving coils are also advantageous. since after being passed through the coils 11 and copies of this patent may be obtained for five cents each, by addressing the supply direct to the coils drying roll, a felt thereon, and a 12, the steam can be carried to any other point or points of use. The steam-drying of the felts is further advantageous since it tends to prolong the usefulness of the felts and assures the production of strong and uniformly finished paper.

To supply the coils 11 and 12, steam may be taken from any source of supply;,,and in this connection we would have it understood that steam may be carried from a source of 11 and 12, and from said coils 11 and '12 to another point or points of use, or the steam may be put to any desired use and then conducted to the coils 11 and 12, in the discretion of the party practising our invention, Without involving departure from the scope of our i11- vention as claimed. We prefer, however, to conduct direct from the source of supply to the coils in order that the coils may be kept tilled at all times with highly-heated or super-heated steam, this in order to contribute to the drying and the steam-removing capacity of the coils.

The term coils as herein employed is intended to comprehend any type of container constructed with a view to conducting steam in a tortuous course in close proximity to the felt and the rolls to dry the felt and remove steam from the rolls.

Having described our invention, what we' claim and desire to secure by Letters-Patent. is:

The combination in a paper machine. of a pipe adapted to be connected with a source of steam supply and a point at which the steam may be used or discharged and having at an intermediate point of its length a coil arranged in close proximity to the roll and the felt.

In testimony whereofwe have hereunto set our hands in presence of two subscribing witnesses.

HENRY E. RMT'IH. ELWIN S. DANIELS. LEWIS F. LEHR.

Witnesses GEO. A. WiLLsoN, RICHARD D. RICE.

"commissioner of Patents,

Washington, D. 0. 

